private void btnSelect_Click(object sender, EventArgs e)
{
string seach = ""; //存储查询条件
try
{
if (cbQuery.SelectedIndex == 0)
{
BindDate();
return;
}
else if (cbQuery.SelectedIndex == 1)
{
seach = txtQueryValue.Text.Trim(); //从文本框取出查询值
if (seach == "") //判断是否为空
{
MessageBox.Show("请输入查询值！");
txtQueryValue.Focus();
return;
}
c = cBLL.FindByID(seach);
if (c != null)
{
list = new List <Category>();
list.Add(c);
dgCategoryInfo.DataSource = null;
dgCategoryInfo.DataSource = list;
if (list.Count > 0)
{
dgCategoryInfo.CurrentCell.Selected = false; //取消反蓝
}
return;
}
else
{
MessageBox.Show("没有查询到记录！");
txtQueryValue.Text = "";
txtQueryValue.Focus();
return;
}
}
else if (cbQuery.SelectedIndex == 2)
{
seach = txtQueryValue.Text.Trim(); //从文本框取出查询值
if (seach == "") //判断是否为空
{
MessageBox.Show("请输入查询值！");
txtQueryValue.Focus();
return;
}
list = cBLL.FindByName(txtQueryValue.Text.Trim());
if (list == null)
{
MessageBox.Show("没有查询到记录！");
txtQueryValue.Text = "";
txtQueryValue.Focus();
return;
}
if (list.Count > 0)
{
dgCategoryInfo.DataSource = null;
dgCategoryInfo.DataSource = list;
dgCategoryInfo.CurrentCell.Selected = false; //取消反蓝
return;
}
else
{
MessageBox.Show("没有查询到记录！");
txtQueryValue.Text = "";
txtQueryValue.Focus();
return;
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
